description

dissolved oxygen meter,
separate probe
model : pdo-520
* range : 0 to 20.0 mg/l x 0.1 mg/l.
* temperature : 0 to 50 oc, oc/of.
* automatic temperature compensation.
* separate do probe easy for remoting
operation.
* polarographic type oxygen electrode,
professional.
* data hold, record ( max., min. ).
* external calibration buttons.
* dc 1.5v battery ( um-4, aaa ) x 4.